Class 11 NEET Physics Thermodynamics and Kinetic Theory

Mass of the gas =m.
At a fixed temperature and pressure, volume is fixed.
Density of the gas ρ=

m

V

⇒

m

V.P

=

m

nRT

=x
∴xT= constant.
At 10°C i.e., 283K, xT=x.283K...(i)
At 110°C, xT=x′.383K...(ii)
From eq. (i) and(ii) we get
x′=

283

383

x